Again: Large and Small Apertures
Large Apertures
At the largest aperture, a maximum amount of light can pass through the aperture to reach the image sensor. This therefore allows for a fast shutter speed, good for freezing action, at the same time minimising the effect of camera shake (caused by instability.) Resulting pictures are usually not blurred.
A large aperture also provides a shallow DOF. This isolates your subjects nicely, but focusing solely on it, while blurring the background.
Small Apertures
Converse to using large apertures, small apertures are good to work with when you desire a slow shutter speed. While fast shutter speeds freezes action, slow shutter speeds allows for more action, depicting motion.
Small apertures provides a greater DOF. A greater DOF is good for taking landscape pictures, where it is desirable to have the foreground, as well as the background to be in sharp focus.
At the largest aperture, a maximum amount of light can pass through the aperture to reach the image sensor. This therefore allows for a fast shutter speed, good for freezing action, at the same time minimising the effect of camera shake (caused by instability.) Resulting pictures are usually not blurred.
A large aperture also provides a shallow DOF. This isolates your subjects nicely, but focusing solely on it, while blurring the background.
Small Apertures
Converse to using large apertures, small apertures are good to work with when you desire a slow shutter speed. While fast shutter speeds freezes action, slow shutter speeds allows for more action, depicting motion.
Small apertures provides a greater DOF. A greater DOF is good for taking landscape pictures, where it is desirable to have the foreground, as well as the background to be in sharp focus.
